<p>This has been bugging me for a while - during the SAT, I made a lot of last minute changes, but I bubbled in darkly, so when I erased my answer and filled in the new one I could still see a faint but visible gray mark that was pretty dark. Would the machine pick up on it and say the question was marked incorrectly?</p>
<p>I'm probably just freaking out about this, but it has happened with the machines in my school several times in the past. Any input would be appreciated. :)</p>
<p>Happened to me too. I messed up a grid in and had to erase three bubbles, but my eraser sucked. I hope it doesn’t read it</p>
<p>I always use white-out so this doesn’t happen :)</p>
<p>Hmm, okay. Does anyone who’s erased and remarked a lot of their answers in the past ever have a problem with this?</p>
<p>I’m a fellow paranoid here. 
I was freaking out about erasures in June and now I’m freaking out over my erasures I made on the November test. I think the machine read my answers with erasures in June correctly but I can’t tell for sure because I wasn’t confident about my answers.</p>
<p>Hmm, I erased answers like 3 times. I bubbled the original in kind of darkly, like not lightly but not stabbing-the-paper hard either. If you looked at it, you could tell that I had erased but I’m hoping the machine gets it right.</p>
<p>I used no. 2 pencil. How dark do the remains of the original answer need to be to throw the machine off?</p>
<p>i think the machines have to detect something chemical-- not color.</p>
<p>Scantrons work by reflecting opaque light. If the marks were dark enough to reflect any light, then it will most likely be marked incorrect. However, if you erased it to a dull grey color but it clearly had no amount of shine to it, the answer should be okay.</p>
<p>firstly, dont worry schools have suckyer machines than cb.</p>
<p>secondly, cant you appeal your scores and have them hand graded?</p>
<p>Prmdi - Really? I didn’t know that. How would you go about doing it?</p>
<p>you pay 50$</p>
<p>[Hand-Scoring/Requests</a> for Score Verification](<a href=“College Board - SAT, AP, College Search and Admission Tools”>College Board - SAT, AP, College Search and Admission Tools)</p>
<p>its at the bottom.</p>
<p>evidently jshapiro has never taken the SAT</p>